Effect of Guanxinkang on ATP-sensitive potassium channel in myocardial cells of rat with ischemic/ reperfusion injury / 中国中西医结合杂志
Chinese Journal of Integrated Traditional and Western Medicine
;
(12): 1186-1189, 2010.
Artigo
em Chinês
| WPRIM
| ID: wpr-327476
ABSTRACT
<p><b>UNLABELLED</b>OBJECTIVE To investigate the effect of Guanxinkang (GXK) on ATP-sensitive potassium channel in myocardial cells of rat with ischemic/reperfusion injury and its possible mechanism for cardiac vascular protection and anti-myocardial ischemia.</p><p><b>METHODS</b>Wistar rats were established into I/R injured models by 10 min perfusion--30 min no-flow ischemia--45 min reperfusion, and divided into 5 groups the I/R model group and 4 treatment groups treated respectively with glibenclamide, pinacidil, GXK and GXK+glibenclamide. Rats' heart were isolated for detecting Ca(2+)-Mg(2+)-ATPase, Na(+)-K(+)-ATPase activity in myocardial cells, and the changes of current in ATP-sensive potassium channel (K(ATP)) was recorded by whole patch clamp technique. Data were controlled by those taken from normal rats in a control group.</p><p><b>RESULTS</b>K(ATP) in the GXK treated group were higher than that in the I/R model group; and similar to that in the pinacidil treated group (P > 0.05). As compared with the model group, activities of Ca(2+)-Mg(2+)-ATPase and Na(+)-K(+)-ATPase in the GXK treated group were increased significantly (P < 0.05).</p><p><b>CONCLUSION</b>GXK shows definite intervention effect on myocardial I/R injury; which is possibly by way of furthering the opening of K(ATP) channel, decreasing Ca2+ influx, and inhibiting Ca2+ overload.</p>
Texto completo:
DisponíveL
Índice:
WPRIM (Pacífico Ocidental)
Assunto principal:
Farmacologia
/
Medicamentos de Ervas Chinesas
/
Traumatismo por Reperfusão Miocárdica
/
Cálcio
/
Ratos Wistar
/
Isquemia Miocárdica
/
Miócitos Cardíacos
/
Canais KATP
/
Metabolismo
Tipo de estudo:
Estudo diagnóstico
/
Estudo prognóstico
Limite:
Animais
Idioma:
Chinês
Revista:
Chinese Journal of Integrated Traditional and Western Medicine
Ano de publicação:
2010
Tipo de documento:
Artigo
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